By PAUL REES

Johnny Sexton’s travelling in the Six Nations started in Paris 13 years ago and it is set to end today at Murrayfield, a ground where he has never tasted defeat in the championship.
The 37-year old Ireland captain and outside-half has yet to say whether he will play on after the World Cup later this year, but it is expected that he will call time on a senior career that started when he came on as a replacement for Leinster against the Borders in the 2005-06 season.
Sexton’s first match against Scotland started in defeat at Croke Park in 2010 and he was on the losing side at M...